Saw-swage.



A. E. PROCTOR.

SAW SWAGE.

APPLICATION IILED JAN. 31, 1912.

1,045,078. Patented Nov. 19, 1912.

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A.'E. PROUTOR.

sAw SWAGE.

APPLICATION FILED JAN. 31, 1912.

1,045,078. I Patented Nov. 19, 1912.

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A. E. PROGTOR.

SAW SWAGB.

APPLICATION FILED JAN. 31,1912.

1 $045,078, Patented Nov. 19, 1912.

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ALBERT E. PROGTOR, OF BELLINGHAIVI, WASHINGTON.

SAW-SWAGE.

Specification of Letters Patent.

lPatented Nov. 19, 1912.

Application filed. January 31, 1912. Serial No. 674,589.

T 0 all whom it concern:

Be it known that I, ALBERT E. PRooroR, a citizen of the United States,and resident of the city of Bellingham, in the county of Whatcom andState of Washington, have invented certain new and useful Improve mentsin Saw-Swages, of which the following is a specification.

Iy invention relates to saw swages, and comprises the novel parts andcombinations of parts which are particularly defined in the claims.

My invention belongs to that type of saw swages which consist of anorganized machine having a rotative, cam-like member, which engages oneedge of the tooth and, by pressure and movement toward the point of thetooth, causes a flow of metal at the point, which spreads the toothpoint to give it a chisel shape, wider than the original thickness ofthe tooth.

The object of my invention is to improve and simplify such devices, bothin their construction and operation.

In the drawings which accompany this specification, I have shown myinvention in the form which is now preferred by me.

Figure 1 is a side elevation of my invention in place upon a saw, readyfor use. Fig. 2 is a side view, in section, taken through the slot whichreceives the saw, a section of a saw being shown in dotted lines, theview being taken from the side opposite that of Fig. 1. Fig. 3 is a topplan view. Fig. 4 is a longitudinal section, and Fig. 5

a cross section of the sleeve which surrounds the swage bar.

Figs. 6 and 7 are two views showing the swage bar and the operatinghandle therefor. Figs. 8 and 9 show, from different View points, the sawclamping bolt and its operating handle. Figs. 10 and 11 are respectivelyelevation and cross section of the anvil block.

The frame or body upon which the operating parts are assembled. isherein shown as a cylindrical block 1, having therein a a transverseslot 10, cutting well into the body thereof and designed for thereception of the toothed edge of the saw, when the device is in positionfor use. It also has a bore, parallel with its axis and intersecting theslot 10, in which is mounted the swage bar, a bore extending from itsperiphery to intersect the former bore and designed to receive the anvilblock, and bores for the reception of the saw clamping bolts.

Other saw swages now in use have similar parts, but differ specificallyin their construction of these parts.

The position of the swage upon the saw, is determined by the position ofthe arm 12, which projects from the frame 1, and is provided withadjustable means for engaging the toothed edge of the saw. I prefer tosecure this arm to the frame by a pivot bolt 13, the inner end of thearm being placed within a slot or channel in an arm 11, which is securedto or integral with the frame 1. The angular position of the arm 12 maybe varied by an adjusting screw or bolt 14. To the outer end of the arm12 is secured a bar 6, having a yoke or forked end 60, adapted tostraddle the saw. These two bars are adjustably secured together by aclamping bolt 62, which passes through the slotted ends 15 and 61 of therespective bars.

To the yoke or forked end of the bar 6 is secured, by a pivot 51, aslide 5, which is of a channeled cross section, the flanges 50 lying,when in use, one at each side of the saw. Within this channel is a bar52, held outward by a flat or bar spring 53, and restrained by bolts 54.This bar 52 directly engages the outer surface of the saw teeth.

The frame block 1 has a hole therein placed in an approximatediametrical position and intersecting both the slot 10 and the borewhich contains the swage bar. In this hole is placed the anvil block 4.The sides of this block are engaged by the screws 40 which hold itlaterally. Its end is engaged by a set screw which determines itsposition lengthwise its containing bore, and its projection into theslot 10. I have herein shown a compound bolt consisting of a plug {15which screws into the outer end of the bore, and a central adjustingbolt 16 which screws into a central hole in the plug 45.

Passing through the frame block parallel with its axis and intersectingthe slot 10 and the bore which contains the anvil block, is a bore whichreceives the swage bar. The

swage bar 3 is of a symmetrical, non-circular cross section, in thesense that it may be turned about its axis into more than one position,in each of which it presents a like face in like relation to the tooth.The form shown and preferred is one in which the cross'section isoutlined by segments of circles of larger diameter than that of the bar.As herein shown the cross section is outlined by two segments ofcircles.

A sleeve 2 is provided which is circular in outer cross section, fittingthe bore in the frame block, and has an axial hole of the same crosssection as that of the swage bar 3, which hole receives the swage bar.This sleeve serves as a support and journal for the swage block, turningwith it and permitting adjustment of the swage bar lengthwise, and alsoby turning upon its axis, so as to present different surfaces to the sawteeth.

The sleeve 2 has a flange 21 at one end, preferably integral therewith,and at the other end a flange ring 23, screw threaded thereon, orotherwise removable at will. The sleeve 2 has a transverse slot 20, inposition to register with the slot 10 in the frame block, this slotcutting half or more of the sleeve and permitting engagement of the sawteeth by the swage bar. The flange 21 of the sleeve 2 has a peripheralgroove 22 which receives the inwardly turned end of a plate 34 which issecured to the swage operating lever 30, thereby holding these partsagainst lateral displacement while permitting free relative rotativemovements.

The swage bar is directly engaged by the operating handle, the sleeve 2serving solely to support the bar so that it may be rotated. Inconsequence there is no strain upon it tending to break it. Theoperating handle 30 has a short sleeve or bushing 33 of similar crosssection and the head 35 which receives this bushing is slit at one side,the ears 31 at each side of this slit being drawn together by a clampingbolt 32.

The device is placed upon a saw in the manner shown in Fig. 2. The anvilblock engages the outer edge of the teeth at their point and a corner ofthe swage bar extends under the tooth in position to engage the undersurface of the tooth close to its point. By rocking the swage bar thematerial at the point of the tooth is swaged out into a chisel point.

The extent of swing of the operating arm 30 is limited by adjustablestop bolts 17 18, secured in a segment slot in an are 16 secured to theblock 1.

The saw, while being operated upon, is held by a clamping bolt 41, whichis threaded at each end, so that either end may be used to engage thesaw. The lever 42 by which it is operated, is secured thereto by a splithead having a clamping bolt 44 passing through the ears 4:3. This headis threaded to engage the threads on the bolt 11. The ends of this boltare preferably circularly grooved to enable it to better grip the faceof the saw, and when one end becomes worn the bolt may be reversed inposition so as to use the other end. Opposite this bolt is placed acomplemental bolt, 47 which is set in fixed position.

By the construction adopted for the swage bar and its mounting, a numberof advantages are obtained. The handle being secured directly to theswage bar, no torsion strain is produced in the sleeve of bushing 2, andit is not likely to get broken. As this bushing is of irregular shapeand costly to make, this is a material advantage.

The swage bar being of symmetrical cross section, it may be turned tobring any of its faces into working position. The method of securingthis bar to the operating lever 30, permits reversal of the swage barend for end, and also its adjustment endwise, thereby making possiblethe utilization of substantially the entire outer surface of the bar asswaging surfaces for engagement with the teeth, instead of using only asmall section of its length, as may only be done in other like devices.This feature adds greatly to the life of the bar.

What I claim as my invention is:

1. A saw swage having a swage bar of symmetrical, non -circular crosssection throughout its length, a bearing sleeve surrounding said bar andhaving a bore of outline to fit said bar and a circular outer shape, anda handle having clamping engagement withthe swage bar, whereby saidswage bar may be both turned and reversed within its bearing sleeve andmay also be adjusted lengthwise.

2. In a saw swage, in combination, a frame adapted to fit over the sawand having a hole with its axis perpendicular to the plane occupied bythe saw, a sleeve rotatively fitting said hole and having an axialperforation of a symmetrical cross section outlined by intersecting arcsof circles, a swage bar having a cross section fitting said axialperforation of the sleeve, and a handle having clamping engagement withthe swage bar.

3. In a saw swage, in combination, a frame having a slot therein adaptedto fit over a saw, and a cylindrical hole perpendicular to andintersecting said slot, a sleeve rotatively secured in said hole, saidsleeve having an axial hole of a cross section of a symmetrical,non-circular outline, and a cross slot at one side registering with theslot in the frame, a swage bar of like cross section fitting the axialhole in the sleeve, an operating lever clamped directly to the swagebar, and means fdr retaining said swage bar in said sleeve.

4. In a saw swage, in combination, a frame having a slot therein adaptedto fit over the saw, and a cylindrical hole perpendicular to andintersecting said slot, a sleeve rotatively secured in said hole, saidsleeve having an axial hole of a cross section of symmetrical,

non-circular outline and across slot at one side registering with theslot in the frame, said sleeve having a peripheral groove at in saidgroove, a swage bar of a cross section afixed my signature atBellingham, What- ,which ts said axial hole in the sleeve, an comcounty, Washington this 22nd day of operating lever having a clampingengage- August, 1911. ment with the swage bar, whereby said bar ALBERTE. PROCTOR. 5 may be adjusted lengthwise and reversed Witnesses:

both rotatively and endwise. A. MAKIN, In testimony whereof I havehereunto ANDERS ANDERSON.

Copies of this patent may be obtained for five cents each, by addressingthe Chmmissioner of Patents. Washington, D. G.

